MY DOG BIT MY OTHER DOGS BAD ! HELP?

SO I HAVE 3 DOGS 2 SMALL CHIHUAHUA MIX AND A LAB SHAR PEI THE LITTLE DOGS ARE ABOUT 10 AND 13 Y/O MY LAB SHAR PEI IS A LITTLE OVER A YEAR OLD ABOUT A WEEK AGO SHE RIPPED OPEN THE OLDER LITTLE DOGS NECK AND MAY HAVE DAMAGED HIS TRACHEA BUT HES STILL HERE AND GETTING BETTER EVERYDAY YESTERDAY SHE DID THE SAME THING TO MY OTHER LITTLE DOG :( SHE ALSO HAD TO GO TO THE VET SHES GETTING BETTER ALREADY THEY ARE BOTH EATING AND WALKING THE QUESTION IS I DONT KNOW WHAT TO DO WITH MY PUPPY :( COULD THIS BEHAVIOR BE CORRECTED OR IS IT TOO LATE I CRY THINKING ABOUT NEVER SEEING HER AGAIN BECAUSE SHES GOOD WITH KIDS AND HAS NEVER TRIED TO BIT A PERSON